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floppy · 06-07-2024, 02:24 PM

Hello,
I got an HP-41CY TURBO from W&W in the hand. Where could I find some material for setup? I could not find any topic in the forum. I am still searching: any hint where to further search is welcome.

Hiwi · 06-07-2024, 03:09 PM

Hi floppy,
there is some documentation on HP41.XXX, it is not allowed to past the url here :-)
And look for the w&W rambox doks, the CY is a HP41 with built in rambox and speedup.
Is the battery ok? it not there are several ways to recover the os.
Ralf

Sylvain Cote · (This post was last modified: 06-07-2024 03:14 PM by Sylvain Cote.)

W&W → 41CW , 41CY , RAMBOX32 & RAMBOX64

HP-41CY Excursions (Part I) , Jürgen Keller
HP-41CY Excursions (Part 2) , Jürgen Keller
HP-41CY Initialization ROM (github), Jürgen Keller
HP-41CY re-initialization ROM (thread), Jürgen Keller
RAMBOX Owner's Manual
HP-41CY TURBO RAMBOX II Owner's Manual (German)
32 KB RAMBOX Owner's Manual (Abramson)
HP-41CW TURBO and HP-41CY TURBO Addendum

I have successfully revived 41CY and RAMBox devices with Jürgen's initialization ROM loaded on a Clonix module.

Hiwi · (This post was last modified: 06-07-2024 03:15 PM by Hiwi.)

search for the
HP-41CY Turbo-RamboxII - German.pdf
it is in German as well.

Ralf

PS. I have some schematics of the rambox from Andreas Mayer, the developer of the Rambox

Jurgen Keller · 06-08-2024, 04:28 PM

(06-07-2024 03:10 PM)Sylvain Cote Wrote: ...
I have successfully revived 41CY and RAMBox devices with Jürgen's initialization ROM loaded on a Clonix module.

Glad to hear it worked for other people. I still remember some sleepless nights until I got the right idea how to implement it. ;-)

floppy · 06-09-2024, 05:54 PM

(06-08-2024 04:28 PM)Jurgen Keller Wrote:
(06-07-2024 03:10 PM)Sylvain Cote Wrote: ...
I have successfully revived 41CY and RAMBox devices with Jürgen's initialization ROM loaded on a Clonix module.

Glad to hear it worked for other people. I still remember some sleepless nights until I got the right idea how to implement it. ;-)

A person in this forum proposed to me a "HP41 CY revival session" meeting the next weeks in South-Germany.

However, in order to be prepared or to have already make some progress prior this meeting ..
a) where is Jürgen ROM?
b) how to proceed with the Clonix module? (programming, setup, in which port of the HP41, key sequence prior power on..?)
c) what battery and how to change it on an HP41CY ?

Sylvain Cote · 06-10-2024, 02:59 AM

I give up! Sad

floppy · 06-10-2024, 06:57 AM

You can.. ;-) I see the links above and I suppose it will mostly answer my questions. Thanks.

PeterP · 06-10-2024, 11:41 AM

(06-07-2024 03:10 PM)Sylvain Cote Wrote: W&W → 41CW , 41CY , RAMBOX32 & RAMBOX64

HP-41CY Excursions (Part I) , Jürgen Keller

HP-41CY Excursions (Part 2) , Jürgen Keller

HP-41CY Initialization ROM (github), Jürgen Keller

HP-41CY re-initialization ROM (thread), Jürgen Keller

RAMBOX Owner's Manual

HP-41CY TURBO RAMBOX II Owner's Manual (German)

32 KB RAMBOX Owner's Manual (Abramson)

HP-41CW TURBO and HP-41CY TURBO Addendum

I have successfully revived 41CY and RAMBox devices with Jürgen's initialization ROM loaded on a Clonix module.

The Addendum is something I had not seen but it confirms the existence of the 41-CW, a device I had looked for a while back but never seen. Has anyone here seen a 41-CW, maybe has pictures?

Sylvain Cote · (This post was last modified: 06-11-2024 04:50 AM by Sylvain Cote.)

(06-10-2024 11:41 AM)PeterP Wrote: The Addendum is something I had not seen but it confirms the existence of the 41-CW, a device I had looked for a while back but never seen.
Has anyone here seen a 41-CW, maybe has pictures?

Same for me, never seen it, except maybe when I was at Matthias home several years ago, I do not remember, ask him, he has a lot of W&W products in his collection. ... or maybe Jürgen ?

W&W March 1987 Price List (in Prisma #2 1987)

Code:

HP-41 CY TURBO   1499 DM → HP-41CX Halfnut with RAMBOX 64 in it

HP-41 CW TURBO   1378 DM → HP-41CV Halfnut with RAMBOX 64 in it.

RAMBOX II 64K     949 DM

RAMBOX    32K     595 DM

edit: I should had re-read my own post, I had forgotten that the CW had the RAMBOX 64 in it.

The built-in additional memory

Quote:The HP-41 CW and CY TURBO have a built-in 64K additional memory.

Working with extra modules and the magnetic card reader

Quote:Since the card reader of the HP-41 uses the same XROM-no as the RAMBOX operating system, functions of the card reader can only be recalled when the RAMBOX operating system is turned off. This is done by plugging a 4K or a 8K module in port 1. There is no restrictions for the reading and writing of programs, since no functions have to be executed, only the magnetic cards have to be inserted.

This is a misleading comment, the card reader uses XROM 30 while the RB32/RB64/CW/CY uses XROM 31.

**rprosperi** · 06-11-2024, 03:12 AM

A guy I don't know named Araguaia Ateneu has posted a photo in a FB HP Group of part of his HP collection, which includes, if this can be believed, 3 x HP-41CW units, which he says he acquired more than 10 years ago. I'd post the photo here, but it's not a good photo, taken from 6+ feet away, and all 41 models look the same, there are no discernible details on them. He at least knows what they are; when asked what a 41CW is, he pointed to this doc at Eric's site:

https://literature.hpcalc.org/items/1424 (same addendum Sylvain pointed out).

Jurgen Keller · 06-11-2024, 12:17 PM

(06-09-2024 05:54 PM)floppy Wrote:
(06-08-2024 04:28 PM)Jurgen Keller Wrote: Glad to hear it worked for other people. I still remember some sleepless nights until I got the right idea how to implement it. ;-)
A person in this forum proposed to me a "HP41 CY revival session" meeting the next weeks in South-Germany.

However, in order to be prepared or to have already make some progress prior this meeting ..
a) where is Jürgen ROM?
b) how to proceed with the Clonix module? (programming, setup, in which port of the HP41, key sequence prior power on..?)
c) what battery and how to change it on an HP41CY ?

a) You'll find it here: https://github.com/blanknut/rb2ini
b) Look at the documentation on Github. If you think it needs some clarification, let me know and I will try to improve it.
c) Not sure if I understand your question right. The 41CY has an internal backup battery. So you can change the battery pack without losing data, and there is no hurry.

Regarding the "41CY revival session" in South Germany: as I live at the (Swiss part of) the Lake of Constance, I might be interested to join. Where exactly will it happen? You can also send me a PM.

Jurgen Keller · 06-11-2024, 12:27 PM

(06-10-2024 02:46 PM)Sylvain Cote Wrote:
(06-10-2024 11:41 AM)PeterP Wrote: The Addendum is something I had not seen but it confirms the existence of the 41-CW, a device I had looked for a while back but never seen.
Has anyone here seen a 41-CW, maybe has pictures?
Same for me, never seen it, except maybe when I was at Matthias home several years ago, I do not remember, ask him, he has a lot of W&W products in his collection. ... or maybe Jürgen ?

W&W March 1987 Price List (in Prisma #2 1987)

Code:

HP-41 CY TURBO 1499 DM → HP-41CX Halfnut with RAMBOX 64 in it HP-41 CW TURBO 1378 DM → HP-41CV Halfnut with RAMBOX 64 in it. RAMBOX II 64K 949 DM RAMBOX 32K 595 DM

edit: I should had re-read my own post, I had forgotten that the CW had the RAMBOX 64 in it.

The built-in additional memory

Quote:The HP-41 CW and CY TURBO have a built-in 64K additional memory.

Working with extra modules and the magnetic card reader

Quote:Since the card reader of the HP-41 uses the same XROM-no as the RAMBOX operating system, functions of the card reader can only be recalled when the RAMBOX operating system is turned off. This is done by plugging a 4K or a 8K module in port 1. There is no restrictions for the reading and writing of programs, since no functions have to be executed, only the magnetic cards have to be inserted.
This is a misleading comment, the card reader uses XROM 30 while the RB32/RB64/CW/CY uses XROM 31.

I never saw a 41CW in real, unfortunately.
It's even not clear to me what the exact differences are between the 41CY and 41CW. Some say the 41CW has a 32K RAMBOX only, and the Addendum and price list above say, both have a 64K RAMBOX. If the 41CW is really a 41CV with 64K RAMBOX (and probably the Turbo-Mode, too) then it does not look very interesting. It would also explain why it is so rare, because I don't think there was much demand for such a variant.

AndiGer · 06-11-2024, 04:23 PM

Interesting ...
Google search on Win doesn't find what is was looking for (and read before) but first match in Safari on iFon.

Here is some explanation of the CY and CW difference (if it is true and explains the price difference back in the days):

https://www.hpmuseum.org/cgi-sys/cgiwrap...read=66897

In short: CW has 32K inside Matthias wrote

Jurgen Keller · 06-11-2024, 08:18 PM

(06-11-2024 04:23 PM)AndiGer Wrote: Interesting ...
Google search on Win doesn't find what is was looking for (and read before) but first match in Safari on iFon.

Here is some explanation of the CY and CW difference (if it is true and explains the price difference back in the days):

https://www.hpmuseum.org/cgi-sys/cgiwrap...read=66897

In short: CW has 32K inside Matthias wrote

But the addendum referenced above says something else ..

AndiGer · 06-12-2024, 04:08 AM

Juergen,
You are right. The CW and CY addendum says both have 64k memory built-in.
And on the last page you find that with the CW you can use the Time module.
In consequence the CW is - as Sylvain wrote - CV with 64k RAMBOX built in.
Makes also sense from the naming side:
CX —> CY
CV —> CW

Jurgen Keller · 06-12-2024, 05:52 AM

(06-12-2024 04:08 AM)AndiGer Wrote: Juergen,
You are right. The CW and CY addendum says both have 64k memory built-in.
And on the last page you find that with the CW you can use the Time module.
In consequence the CW is - as Sylvain wrote - CV with 64k RAMBOX built in.
Makes also sense from the naming side:
CX —> CY
CV —> CW

Good observation regarding the naming!

Makes also sense from the pricing side: 1499 vs 1378 DM. That was probably (more or less) the difference between a CX and a CV. If the CW would only provide a 32K RAMBOX, it would be difficult to justify that price. I think the reason why CWs are so rare is that the CY provided better value for the money.

floppy · 07-14-2024, 07:42 PM

Thanks Jurgen Keller and Thomas M, the HP41 CY named in post#1 is working (the inner battery was not good anymore). A meeting in south germany together made it (inner battery changed, RAMBOX reprogrammed, feet changed after housing unscrew).

PeterP · 07-15-2024, 11:00 AM

Congratulations to everyone! Anytime a CY is revived and enjoyed in the community, is a day to celebrate due to how rare and special this top-of-the line version of the 41 from those days is.

Jurgen Keller · 07-15-2024, 05:05 PM

(07-14-2024 07:42 PM)floppy Wrote: Thanks Jurgen Keller and Thomas M, the HP41 CY named in post#1 is working (the inner battery was not good anymore). A meeting in south germany together made it (inner battery changed, RAMBOX reprogrammed, feet changed after housing unscrew).

My pleasure. It was a great day and we enjoyed to save the life of another 41CY. We also had some interesting exchange about other stuff like W&W RAMBOXes and, last but not least, an excellent lunch. I really enjoyed to meet a member of this forum, such meetings are always inspiring :-)